First anchor update (automatic)

First anchor update, running a program

spec/Fixmd.java

@@ -0,0 +1,63 @@
+import java.util.regex.Pattern;
+import java.util.regex.Matcher;
+import java.util.stream.Collectors;
+
+import java.util.List;
+import java.util.Map;
+
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.StandardOpenOption;
+
+public class Fixmd {
+
+	public static void main(String[] args) throws Exception {
+		Pattern pattern = Pattern.compile("^\\#+\\s*\\<a\\s+\\w+=\"(.+)\"\s*>\s*</a>\s*(.*)\s*$");
+		var replacementMap = Files.lines(Path.of("asyncapi.md"))
+			.filter(l -> l.matches("^\\#+.*"))
+			.map(l -> patternGroupsToArray(pattern, l))
+			.collect(Collectors.groupingBy(x->x.get(0), Collectors.mapping(x->x.get(1), Collectors.toList())));
+
+		System.out.println(replacementMap);
+
+
+		Files.write(
+				Path.of("result.md"),
+				Files.lines(Path.of("asyncapi.md"))
+					.map(l -> l.matches(".*\\(\\#user-content-[\\w\\-]+\\).*") ? replaceOldAnchor(l, replacementMap) : l)
+					.toList(),
+				StandardOpenOption.TRUNCATE_EXISTING, StandardOpenOption.CREATE_NEW
+		);
+
+
+	}
+
+	public static String replaceOldAnchor(String line, Map<String, List<String>> replacementMap) {
+		Pattern pattern = Pattern.compile(".*\\((\\#user-content-([\\w\\-]+))\\).*");
+		Matcher matcher = pattern.matcher(line);
+		if(matcher.matches()) {
+			String oldAnchorKey = matcher.group(2);
+			if(replacementMap.containsKey(oldAnchorKey)) {
+				String oldAnchor = matcher.group(1);
+				String newAnchor = "#" + replacementMap.get(oldAnchorKey).get(0).trim().toLowerCase().replaceAll("\\s", "-");
+				System.out.println("Replacing %s with %s".formatted(oldAnchor, newAnchor));
+				return line.replace(oldAnchor, newAnchor);
+			} else {
+				System.out.println("Key not found:" + oldAnchorKey);
+			}
+		}
+
+		return line;
+
+	}
+
+	public static List<String> patternGroupsToArray(Pattern pattern, String s) {
+		Matcher matcher = pattern.matcher(s);
+		if(matcher.matches()) {
+			return List.of(matcher.group(1), matcher.group(2));
+		} else {
+			return List.of("", s);
+		}
+	}
+
+}